Remote Backup 
Remote backup is a way to backup your vital data off-site every night over the Internet. This eliminate the possibility of not taking a tape off site and gives you the extra peace of mind that you data is secure on a separate computer miles away from your location.
Redundant Data Storage
In the event that your hard drive crashes, wouldn't it be nice to be able to plug in a new drive and continue your daily business? There are two drive configurations you could employ to achieve this.